I guess I just view bad information as a constant. Like bad actors in cybersecurity, for example. So I mean yeah... it's too bad. But not a surprise and not really a variable you can control for. The whole premise of a Democracy is that people have the right to vote however they want. There is no asterisk to that in my opinion.
I really dont see how 1 person 1 vote can survive this idea that people are only as good as the information they receive. If that's true, and people get enough bad information, then you can reasonably conclude that people shouldn't get a vote.